The native habitat of the sawfly is in Central Europe, and, when it was discovered that the sawfly was Kept in check there by another small fly, which is its parasite, the entomologists of the Canadian Government enlisted the ce-operation of their colleagues in Great Britain for the purpose of transplanting to Canada this little agent of natural control of the pest. Experts were sent to Central Europe to gather sawfly cocoons with the eggs of the parasite in them, and they got their largest supplies in Hungary.
Now regular annual supplies have been arranged for, and the cocoons are flown by aeroplane from the point of collection to seaports, whence they are shipped across the Atlantic in fast boats and delivered at the Government's entomological laboratory at Belleville, Ontario. In some cases only twelve days have elapsed between the time that the cocoons were gathered and their delivery at Belle-ville.
In 1936, 20,000,000 of the parasites were imported to Canada for pro-paration and release in the woods in order to wage war on the sawfly, and millions more are coming this year. At Belleville they are kept in a state of arrested development in cold storage, and at appropriate times are shipped to woodland areas and release It is premature to predict complete success for this campaign, but the entomologists profess to be greatly encouraged by results already visible, although they expect that years and perhaps decades will be required for the complete conquest of the sawfly. The pulp and paper companies are fully alive to the menace of the pest and are giving their cordial ce-operation in the warfare against it.
Text read from the printed page and cleaned; old type leaves the occasional error.